Acoustic characteristic correction method and apparatus

Abstract

According to one embodiment, an acoustic characteristic correction apparatus comprises a main module reproducing an audio signal and a remote controller includes a microphone, wherein the main module comprises a generation module generating a measurement signal, a receiver receiving a picked-up signal output from the microphone receiving the measurement signal, a detector module detecting acoustic characteristics based on the picked-up signal, a processor module obtaining correction characteristics based on the acoustic characteristics, and a correction module correcting the audio signal based on the correction characteristics.

1 . An acoustic characteristic correction apparatus comprising:
 a main module configured to reproduce an audio signal and a remote controller comprising a microphone, wherein   the main module comprises:   a generation module configured to generate a measurement signal;   a receiver configured to receive a picked-up signal transmitted from the remote controller, the picked-up signal being output from the microphone receiving the measurement signal;   a detector module configured to detect acoustic characteristics based on the picked-up signal;   a processor module configured to obtain correction characteristics based on the acoustic characteristics; and   a correction module configured to correct the audio signal based on the correction characteristics.   
   
   
       2 . The apparatus of  claim 1 , wherein the remote controller further comprises:
 a transmitter configured to transmit the picked-up signal from the microphone to the main module.   
   
   
       3 . The apparatus of  claim 1 , wherein
 the generation module is configured to generate measurement signals differing in frequency; and   the detector module is configured to detect the acoustic characteristics based on picked-up signals of the measurement signals.   
   
   
       4 . The apparatus of  claim 3 , wherein
 the detector module comprises a memory configured to store the picked-up signals of the measurement signals, and is configured to detect the acoustic characteristics by aligning the picked-up signals read out from the memory in a frequency axis, and by normalizing an amplitude of the picked-up signals.   
   
   
       5 . The apparatus of  claim 3 , wherein
 the transmitter is configured to average the picked-up signals and transmit an averaged signal.   
   
   
       6 . The apparatus of  claim 1 , wherein
 the measurement signal comprises a monotone signal with a plurality of frequencies in audible frequency ranges; and   the remote controller comprises:   a transmitter configured to transmit an amplitude of the picked-up signal from the microphone to the main module.   
   
   
       7 . The apparatus of  claim 1 , wherein
 the processor module is configured to obtain a correction coefficient by calculating inverse Fourier transformation of a difference between the detected acoustic characteristics and ideal acoustic characteristics; and   the correction module is configured to perform convolution of the audio signal based on the correction coefficient.   
   
   
       8 . An acoustic characteristic correction method for an audio apparatus comprising a main module configured to reproduce an audio signal and a remote controller comprising a microphone, the method comprising:
 generating, from the main module, a measurement signal;   receiving, at the main module, a picked-up signal transmitted from the remote controller, the picked-up signal being output from the microphone receiving the measurement signal;   detecting acoustic characteristics based on the picked-up signal;   obtaining correction characteristics based on the acoustic characteristics; and   correcting the audio signal based on the correction characteristics.   
   
   
       9 . The method of  claim 8 , further comprising:
 transmitting the picked-up signal from the remote controller to the main module.   
   
   
       10 . The method of  claim 8 , further comprising:
 generating measurement signals differing in frequency; and   detecting the acoustic characteristics based on picked-up signals of the measurement signals.   
   
   
       11 . The method of  claim 10 , wherein the main module comprises a memory configured to store the picked-up signals of the measurement signals, and
 the detecting comprising aligning the picked-up signals read out from the memory in a frequency axis, and normalizing an amplitude of the picked-up signals.   
   
   
       12 . The method of  claim 10 , further comprising:
 averaging the picked-up signals; and   transmitting an averaged signal from the remote controller to the main module.   
   
   
       13 . The method of  claim 8 , wherein the measurement signal comprises a monotone signal with a plurality of frequencies in audible frequency ranges, and the method further comprising:
 transmitting an amplitude of the picked-up signal from the microphone to the main module.   
   
   
       14 . The method of  claim 8 , wherein the obtaining comprises performing inverse Fourier transformation of a difference between the detected acoustic characteristics and ideal acoustic characteristics; and
 the correction comprises performing convolution of the audio signal based on the correction coefficient.